FORM 1120: EVERYTHING YOU NEED TO KNOW

Do I need to file a Form 1120 if the business had no income?

Most folks only think about the annual Form 1120 Tax return, but there’s actually a ton of taxes and tax deadlines for Delaware C-Corps.

And Yes, even bootstrapped pre-revenue startups must pay taxes. You might not be subject to Income Taxes (which are based on profitability) but you will still be subject to a wide variety of other taxes which aren’t always connected to Revenue.

To start, here are 4 Startup Tax Calendars, based on metro:

Quick caveat though, these startup tax checklists aren’t complete. There are actually a bunch of taxes out there, some of which may or may not apply to you (depending on your unique circumstances, of course). Here’s a list of just some of the different types of taxes out there that you may need to consider:

  • Income Tax: this type of tax is what most people think of when they hear taxes. It’s taxes based on your Net Income, or profit.
  • Gross Receipts Tax: some cities, like San Francisco, will tax your Gross Revenue.
  • Franchise Tax: this type of tax is imposed on businesses who just…exist. Yes, for the pleasure of existing, you will be asked to pay a tax. There’s often a minimum fee, and most times it has nothing to do with whether you’ve generated income. The most common type of Franchise Tax for venture backed startups is DE Franchise Tax, which runs $400+ every year.
  • Payroll Tax: if you have employees, you have payroll tax. Be sure to use a payroll provider like Gusto to help you pay the right taxes at the right time, and file all the requisite forms (like the 941s).
  • Sales Tax: if you tangible goods (eg clothes, furniture, widgets, stuff you can hold in your hand), you’ll need to register, pay, and file sales tax. Use Avalara, because like payroll tax, it can get super crazy very quickly.
  • SaaS Tax: see more here.
  • Property Tax: if you have significant property holdings, whether that be land, or even just computers/tables/chairs, you might be subject to property taxes. This type of filing is frequently known as a “571-L.”
  • Foreign Tax: if you have a foreign subsidiary or parent company, you might be subject to withholding tax, or FBAR/5471/5472 reporting. Be sure to get this one right; the penalties for getting it wrong can be $10K+.

A very common misconception is that the CPA or firm that filed your annual tax return (the 1120) will have taken care of all these types of taxes: that is never the case!! It is always the CEO’s responsibility to make sure that these taxes are addressed and paid on time. Granted, a CEO can only know so much… and the CPA can only guess as to which types of taxes a company might be subject to. Hence, it’s really important to sit down with a CPA to make sure that all bases are covered based on your company’s unique situation.

How to get the Form 1120

You can find the official Form 1120 on the IRS’ website. Always go directly to the IRS’ site to get the form, as they tend to have minor changes from year to year. You can get the IRS Form 1120 by clicking here to visit the Internal Revenue Service’s page about Form 1120.

Form 1120 Department of the Treasury Internal Revenue Service

U.S. Corporation Income Tax Return

For calendar year 2020 or tax year beginning _ _ _ _ _ _ _ _, 2020, ending _ _ _ _ _ _ _ _ , 20_ _

▶ Go to www.irs.gov/Form1120 for instructions and the latest information.

OMB No. 1545-0123

2020

A Check if:

  • 1a Consolidated return (attach Form 851) . .
  •   b Life/nonlife consolidated return . .
  • 2 Personal holding co. (attach Sch. PH) . .
  • 3 Personal service corp. (see instructions) . .
  • 4 Schedule M-3 attached . .

TYPE
OR
PRINT

Name
 
Number, street, and room or suite no. If a P.O. box, see instructions
 
City or town, state or province, country, and ZIP or foreign postal code
 
B Employer identification number
 
C Date incorporated
 
D Total assets (see instructions)
  $                 
E Check if: (1) Initial return (2) Final return (3) Name change (4) Address change
Income
1a
Gross receipts or sales
1a
 
 
b
Returns and allowances
1b
 
 
c
Balance. Subtract line 1b from line 1a
1c
 
2
Cost of goods sold (attach Form 1125-A)
2
 
3
Gross profit. Subtract line 2 from line 1c
3
 
4
Dividends and inclusions (Schedule C, line 23)
4
 
5
Interest
5
 
6
Gross rents
6
 
7
Gross royalties
7
 
8
Capital gain net income (attach Schedule D (Form 1120))
8
 
9
Net gain or (loss) from Form 4797, Part II, line 17 (attach Form 4797)
9
 
10
Other income (see instructions—attach statement)
10
 
11
Total income. Add lines 3 through 10
1
 
Deductions (See instructions for limitations on deductions.)
12
Compensation of officers (see instructions—attach Form 1125-E)
12
 
13
Salaries and wages (less employment credits)
13
 
14
Repairs and maintenance
14
 
15
Bad debts
15
 
16
Rents
16
 
17
Taxes and licenses
17
 
18
Interest (see instructions)
18
 
19
Charitable contributions
19
 
20
Depreciation from Form 4562 not claimed on Form 1125-A or elsewhere on return (attach Form 4562)
20
 
21
Depletion
21
 
22
Advertising
22
 
23
Pension, profit-sharing, etc., plans
23
 
24
Employee benefit programs
24
 
25
Reserved for future use
25
 
26
Other deductions (attach statement)
26
 
27
Total deductions. Add lines 12 through 26
27
 
28
Taxable income before net operating loss deduction and special deductions. Subtract line 27 from line 11
28
 
29a
Net operating loss deduction (see instructions)
29a
 
 
29b
Special deductions (Schedule C, line 24)
29b
 
 
29c
Add lines 29a and 29b
29c
 
Tax, Refundable Credits,
and Payments
30
Taxable income. Subtract line 29c from line 28. See instructions
30
 
31
Total tax (Schedule J, Part I, line 11)
31
 
32
32 2020 net 965 tax liability paid (Schedule J, Part II, line 12)
32
 
33
Total payments, credits, and section 965 net tax liability (Schedule J, Part III, line 23)
33
 
34
34 Estimated tax penalty. See instructions. Check if Form 2220 is attached▶  
34
 
35
Amount owed. If line 33 is smaller than the total of lines 31, 32, and 34, enter amount owed
35
 
36
Overpayment. If line 33 is larger than the total of lines 31, 32, and 34, enter amount overpaid
36
 
37
Enter amount from line 36 you want: Credited to 2021 estimated tax Refunded      
37
 
Sign
Here
Under penalties of perjury, I declare that I have examined this return, including accompanying schedules and statements, and to the best of my knowledge and belief, it is true, correct, and complete. Declaration of preparer (other than taxpayer) is based on all information of which preparer has any knowledge.
 
 
Signature of officer
Date
 
Title
May the IRS discuss this return with the preparer shown below? See instructions.
Yes No
Paid
Preparer
Use Only
Print/Type preparer’s name
 
Preparer’s signature
 
Date
 
Check if self-employed
 
PTIN
 
Firm’s name ▶
 
Firm’s EIN ▶
 
Firm’s address ▶
 
Phone no.
 
For Paperwork Reduction Act Notice, see separate instructions.
Cat. No. 11450Q
Form 1120 (2020)

Warning: This information is for informational purposes only and should not be used for official tax matters. Use the official Form 1120 and instructions, generally found at: https://www.irs.gov/forms-instructions. Rely on this information at your own risk. Visit https://www.irs.gov/forms-instructions for official IRS information. Consult with a tax professional.

Form 1120 (2020)
Page 2
Schedule C
Dividends, Inclusions, and Special Deductions (see instructions)
(a) Dividends and inclusions
(b) %
(c) Special deductions (a) × (b)
1
Dividends from less-than-20%-owned domestic corporations (other than debt-financed stock)
 
 
50
 
 
2
Dividends from 20%-or-more-owned domestic corporations (other than debt-financed stock)
 
 
65
 
 
3
Dividends on certain debt-financed stock of domestic and foreign corporations
 
 
See instructions
 
 
4
Dividends on certain preferred stock of less-than-20%-owned public utilities
 
 
23.3
 
 
5
Dividends on certain preferred stock of 20%-or-more-owned public utilities.
 
 
26.7
 
 
6
Dividends from less-than-20%-owned foreign corporations and certain FSCs
 
 
50
 
 
7
Dividends from 20%-or-more-owned foreign corporations and certain FSCs
 
 
65
 
 
8
Dividends from wholly owned foreign subsidiaries
 
 
100
 
 
9
Subtotal. Add lines 1 through 8. See instructions for limitations
 
 
See instructions
 
 
10
Dividends from domestic corporations received by a small business investment company operating under the Small Business Investment Act of 1958
 
 
100
 
 
11
Dividends from affiliated group members
 
 
100
 
 
12
Dividends from certain FSCs
 
 
100
 
 
13
Foreign-source portion of dividends received from a specified 10%-owned foreign corporation (excluding hybrid dividends) (see instructions)
 
 
100
 
 
14
Dividends from foreign corporations not included on line 3, 6, 7, 8, 11, 12, or 13 (including any hybrid dividends) .
 
 
 
 
15
Section 965(a) inclusion
 
 
See instructions
 
 
16a
Subpart F inclusions derived from the sale by a controlled foreign corporation (CFC) of the stock of a lower-tier foreign corporation treated as a dividend (attach Form(s) 5471) (see instructions)
 
 
100
 
 
b
Subpart F inclusions derived from hybrid dividends of tiered corporations (attach Form(s) 5471) (see instructions)
 
 
 
 
c
Other inclusions from CFCs under subpart F not included on line 15, 16a, 16b, or 17 (attach Form(s) 5471) (see instructions)
 
 
 
 
17
Global Intangible Low-Taxed Income (GILTI) (attach Form(s) 5471 and Form 8992)
 
 
 
 
18
Gross-up for foreign taxes deemed paid .
 
 
 
 
19
IC-DISC and former DISC dividends not included on line 1, 2, or 3
 
 
 
 
20
Other dividends
 
 
 
 
21
Deduction for dividends paid on certain preferred stock of public utilities . .
 
 
 
 
22
Section 250 deduction (attach Form 8993)
 
 
 
 
23
Total dividends and inclusions. Add column (a), lines 9 through 20. Enter here and on page 1, line 4
 
 
 
 
24
Total special deductions. Add column (c), lines 9 through 22. Enter here and on page 1, line 29b
 
 
Form 1120 (2020)

Warning: This information is for informational purposes only and should not be used for official tax matters. Use the official Form 1120 and instructions, generally found at: https://www.irs.gov/forms-instructions. Rely on this information at your own risk. Visit https://www.irs.gov/forms-instructions for official IRS information. Consult with a tax professional.

Form 1120 (2020)
Page 3
Schedule J
Tax Computation and Payment (see instructions)
Part I—Tax Computation
1
Check if the corporation is a member of a controlled group (attach Schedule O (Form 1120)). See instructions ▶  
 
2
Income tax. See instructions
2
 
3
Base erosion minimum tax amount (attach Form 8991)
3
 
4
Add lines 2 and 3
4
 
5a
Foreign tax credit (attach Form 1118)
5a
 
 
b
FCredit from Form 8834 (see instructions)
5b
 
 
c
General business credit (attach Form 3800)
5c
 
 
d
Credit for prior year minimum tax (attach Form 8827)
5d
 
 
e
Bond credits from Form 8912
5e
 
 
6
Total credits. Add lines 5a through 5e
6
 
7
Subtract line 6 from line 4
7
 
8
Personal holding company tax (attach Schedule PH (Form 1120))
8
 
9a
Recapture of investment credit (attach Form 4255)
9a
 
 
b
Recapture of low-income housing credit (attach Form 8611)
9b
 
 
c
Interest due under the look-back method—completed long-term contracts (attach Form 8697)
9c
 
 
d
Interest due under the look-back method—income forecast method (attach Form 8866)
9d
 
 
e
Alternative tax on qualifying shipping activities (attach Form 8902)
9e
 
 
f
Interest/tax due under Section 453A(c) and/or Section 453(l)
9f
 
 
g
Other (see instructions—attach statement)
9g
 
 
10
Total. Add lines 9a through 9g
10
 
11
Total tax. . Add lines 7, 8, and 10. Enter here and on page 1, line 31
11
 
Part II—Section 965 Payments (see instructions)
12
2020 net 965 tax liability paid from Form 965-B, Part II, column (k), line 4. Enter here and on page 1, line 32
12
 
Part III—Payments, Refundable Credits, and Section 965 Net Tax Liability
13
2019 overpayment credited to 2020
13
 
14
2020 estimated tax payments
14
 
15
2020 refund applied for on Form 4466
15
 
16
Combine lines 13, 14, and 15
16
 
17
Tax deposited with Form 7004
17
 
18
Withholding (see instructions)
18
 
19
Total payments. Add lines 16, 17, and 18
19
 
20
Refundable credits from:
 
 
a
Form 2439
20a
 
 
b
Form 4136
20b
 
 
c
Reserved for future use
20c
 
 
d
Other (attach statement—see instructions)
20d
 
 
21
Total credits.Add lines 20a through 20d .
21
 
21
Total credits.Add lines 20a through 20d .
21
 
22
2020 net 965 tax liability from Form 965-B, Part I, column (d), line 4. See instructions
22
 
23
Total payments, credits, and section 965 net tax liability. Add lines 19, 21, and 22. Enter here and on page 1, line 33
23
 
 
Form 1120 (2020)

Warning: This information is for informational purposes only and should not be used for official tax matters. Use the official Form 1120 and instructions, generally found at: https://www.irs.gov/forms-instructions. Rely on this information at your own risk. Visit https://www.irs.gov/forms-instructions for official IRS information. Consult with a tax professional.

Form 1120 (2020)
Page 4
Schedule K
Other Information (see instructions)
1
Check accounting method: a   Cash  b     Accural c     Other (specify)
▶  
Yes
No
2
See the instructions and enter the:
 
 
a
Business activity code no. ▶
 
 
b
Business activity ▶
 
 
c
Product or service ▶
 
 
3
Is the corporation a subsidiary in an affiliated group or a parent–subsidiary controlled group?
 
 
 
If “Yes,” enter name and EIN of the parent corporation ▶
 
 
4
At the end of the tax year:
 
 
a
Did any foreign or domestic corporation, partnership (including any entity treated as a partnership), trust, or tax-exempt organization own directly 20% or more, or own, directly or indirectly, 50% or more of the total voting power of all classes of the corporation’s stock entitled to vote? If “Yes,” complete Part I of Schedule G (Form 1120) (attach Schedule G) .
 
 
 
 
b
Did any foreign or domestic corporation, partnership (including any entity treated as a partnership), trust, or tax-exempt organization own directly 20% or more, or own, directly or indirectly, 50% or more of the total voting power of all classes of the corporation’s stock entitled to vote? If “Yes,” complete Part I of Schedule G (Form 1120) (attach Schedule G) .
 
 
 
 
5
At the end of the tax year, did the corporation:
 
 
a
Own directly 20% or more, or own, directly or indirectly, 50% or more of the total voting power of all classes of stock entitled to vote of any foreign or domestic corporation not included on Form 851, Affiliations Schedule? For rules of constructive ownership, see instructions. If “Yes,” complete (i) through (iv) below.
 
 
 
 
(i) Name of Corporation
(ii) Employer Identification Number (if any)
(iii) Country of Incorporation
(iv) Percentage Owned in Voting Stock
 

 

 

 

 

 

 

 

 

 

 

 

b
Own directly an interest of 20% or more, or own, directly or indirectly, an interest of 50% or more in any foreign or domestic partnership (including an entity treated as a partnership) or in the beneficial interest of a trust? For rules of constructive ownership, see instructions. If “Yes,” complete (i) through (iv) below.
 
 
 
 
(i) Name of Entity
(ii) Employer Identification Number (if any)
(iii) Country of Organization
(iv) Maximum Percentage Owned in Profit, Loss, or Capital
 

 

 

 

 

 

 

 

 

 

 

 

6
During this tax year, did the corporation pay dividends (other than stock dividends and distributions in exchange for stock) in excess of the corporation’s current and accumulated earnings and profits? See sections 301 and 316
 
 
 
 
If “Yes,” file Form 5452, Corporate Report of Nondividend Distributions. See the instructions for Form 5452.
 
 
If this is a consolidated return, answer here for the parent corporation and on Form 851 for each subsidiary.
 
 
7
At any time during the tax year, did one foreign person own, directly or indirectly, at least 25% of the total voting power of all classes of the corporation’s stock entitled to vote or at least 25% of the total value of all classes of the corporation’s stock?
 
 
 
 
For rules of attribution, see section 318. If “Yes,” enter:
 
 
(a) Percentage owned ▶  _ _ _ _ _ _ _ and (b) Owner’s country ▶  _ _ _ _ _ _ _ _ _ _ _
 
 
(c) The corporation may have to file Form 5472, Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign
 
 
Corporation Engaged in a U.S. Trade or Business. Enter the number of Forms 5472 attached ▶  _ _ _ _ _ _ _ _ _ _ _
 
 
8
Check this box if the corporation issued publicly offered debt instruments with original issue discount ▶
 
 
If checked, the corporation may have to file Form 8281, Information Return for Publicly Offered Original Issue Discount Instruments
 
 
9
Enter the amount of tax-exempt interest received or accrued during the tax year ▶ $
 
 
10
Enter the number of shareholders at the end of the tax year (if 100 or fewer) ▶
 
 
11
If the corporation has an NOL for the tax year and is electing to forego the carryback period, check here (see instructions) ▶
 
 
If the corporation is filing a consolidated return, the statement required by Regulations section 1.1502-21(b)(3) must be attached or the election will not be valid.
 
 
 
 
12
Enter the available NOL carryover from prior tax years (do not reduce it by any deduction reported on page 1, line 29a.)
 
 
 
 
 
Form 1120 (2020)

Warning: This information is for informational purposes only and should not be used for official tax matters. Use the official Form 1120 and instructions, generally found at: https://www.irs.gov/forms-instructions. Rely on this information at your own risk. Visit https://www.irs.gov/forms-instructions for official IRS information. Consult with a tax professional.

Form 1120 (2020)
Page 5
Schedule K
Other Information (continued from page 4)
13
3 Are the corporation’s total receipts (page 1, line 1a, plus lines 4 through 10) for the tax year and its total assets at the end of the tax year less than $250,000?
Yes
No
If “Yes,” the corporation is not required to complete Schedules L, M-1, and M-2. Instead, enter the total amount of cash distributions and the book value of property distributions (other than cash) made during the tax year ▶ $
 
 
 
 
14
Did the corporation make any payments in 2020 that would require it to file Form(s) 1099?
 
 
 
 
15a
Is the corporation required to file Schedule UTP (Form 1120), Uncertain Tax Position Statement? See instructions . . . . If “Yes,” complete and attach Schedule UTP.
 
 
b
If “Yes,” did or will the corporation file required Form(s) 1099?
 
 
16
During this tax year, did the corporation have an 80%-or-more change in ownership, including a change due to redemption of its own stock?
 
 
17
During or subsequent to this tax year, but before the filing of this return, did the corporation dispose of more than 65% (by value) of its assets in a taxable, non-taxable, or tax deferred transaction?
 
 
18
Did the corporation receive assets in a section 351 transfer in which any of the transferred assets had a fair market basis or fair market value of more than $1 million?
 
 
19
During the corporation’s tax year, did the corporation make any payments that would require it to file Forms 1042 and 1042-S under chapter 3 (sections 1441 through 1464) or chapter 4 (sections 1471 through 1474) of the Code?
 
 
20
Is the corporation operating on a cooperative basis?.
 
 
21
During the tax year, did the corporation pay or accrue any interest or royalty for which the deduction is not allowed under section 267A? See instructions
 
 
If “Yes,” enter the total amount of the disallowed deductions ▶ $
 
 
22
Does the corporation have gross receipts of at least $500 million in any of the 3 preceding tax years? (See sections 59A(e)(2) and (3))
 
 
If “Yes,” complete and attach Form 8991.
 
 
23
Did the corporation have an election under section 163(j) for any real property trade or business or any farming business in effect during the tax year? See instructions
 
 
24
Does the corporation satisfy one or more of the following? See instructions
 
 
a
The corporation owns a pass-through entity with current, or prior year carryover, excess business interest expense.
 
 
b
The corporation’s aggregate average annual gross receipts (determined under section 448(c)) for the 3 tax years preceding the current tax year are more than $26 million and the corporation has business interest expense
 
 
c
The corporation is a tax shelter and the corporation has business interest expense.
 
 
If “Yes,” complete and attach Form 8990.
 
 
25
Is the corporation attaching Form 8996 to certify as a Qualified Opportunity Fund?
 
 
If “Yes,” enter amount from Form 8996, line 15
 
 
26
Since December 22, 2017, did a foreign corporation directly or indirectly acquire substantially all of the properties held directly or indirectly by the corporation, and was the ownership percentage (by vote or value) for purposes of section 7874 greater than 50% (for example, the shareholders held more than 50% of the stock of the foreign corporation)? If “Yes,” list the ownership percentage by vote and by value. See instructions
 
 
Percentage: By Vote  _ _ _ _ _ _ _ _ _ _ By Vote  _ _ _ _ _ _ _ _ _ _
 
 
 
Form 1120 (2020)

Warning: This information is for informational purposes only and should not be used for official tax matters. Use the official Form 1120 and instructions, generally found at: https://www.irs.gov/forms-instructions. Rely on this information at your own risk. Visit https://www.irs.gov/forms-instructions for official IRS information. Consult with a tax professional.

Form 1120 (2020)
Page 6
Schedule L
Balance Sheets per Books
Beginning of tax year
End of tax year
Assets
(a)
(b)
(c)
(d)
1
Cash
 
 
 
 
2a
Trade notes and accounts receivable
 
 
 
 
b
Less allowance for bad debts
 
 
 
 
3
Inventories
 
 
 
 
4
U.S. government obligations
 
 
 
 
5
Tax-exempt securities (see instructions)
 
 
 
 
6
Other current assets (attach statement)
 
 
 
 
7
Loans to shareholders
 
 
 
 
8
Mortgage and real estate loans
 
 
 
 
9
Other investments (attach statement)
 
 
 
 
10a
Buildings and other depreciable assets
 
 
 
 
b
Less accumulated depreciation
 
 
 
 
11a
Depletable assets
 
 
 
 
b
Less accumulated depletion
 
 
 
 
12
Land (net of any amortization)
 
 
 
 
13a
Intangible assets (amortizable only)
 
 
 
 
b
Less accumulated amortization
 
 
 
 
14
Other assets (attach statement)
 
 
 
 
15
Total assets
 
 
 
 
Liabilities and Shareholders’ Equity
 
 
 
 
16
Accounts payable
 
 
 
 
17
Mortgages, notes, bonds payable in less than 1 year
 
 
 
 
18
Other current liabilities (attach statement)
 
 
 
 
19
Loans from shareholders
 
 
 
 
20
Mortgages, notes, bonds payable in 1 year or more
 
 
 
 
21
Other liabilities (attach statement)
 
 
 
 
22
Capital stock: a Preferred stock
 
 
 
 
b Common stock
 
 
 
 
23
Additional paid-in capital
 
 
 
 
24
Retained earnings—Appropriated (attach statement)
 
 
 
 
25
Retained earnings—Unappropriated
 
 
 
 
26
Adjustments to shareholders’ equity (attach statement)
 
 
 
 
27
Less cost of treasury stock
 
 
 
 
28
Total liabilities and shareholders’ equity
 
 
 
 
Schedule M-1
Reconciliation of Income (Loss) per Books With Income per Return
Note: The corporation may be required to file Schedule M-3. See instructions.
1
Net income (loss) per books
 
2
Federal income tax per books
 
3
Excess of capital losses over capital gains
 
4
Income subject to tax not recorded on books this year (itemize)
 
5
Expenses recorded on books this year not deducted on this return (itemize):
 
a
Depreciation
 
b
Charitable contributions . $
 
c
Travel and entertainment
 
6
Add lines 1 through 5
 
7
Income recorded on books this year not included on this return (itemize):
 
8
Tax-exempt interest $
 
8
Deductions on this return not charged against book income this year (itemize):
 
a
Depreciation
 
b
Charitable contributions . $
 
b
Charitable contributions . $
 
9
9 Add lines 7 and 8
 
10
Income (page 1, line 28)—line 6 less line 9
 
Schedule M-2
Analysis of Unappropriated Retained Earnings per Books (Schedule L, Line 25)
1
Balance at beginning of year
 
2
Net income (loss) per books
 
3
Other increases (itemize):
 
 
 
 
 
4
Add lines 1, 2, and 3
 
5
Distributions: a Cash .
 
b Stock
 
c Property
 
6
Other decreases (itemize):
 
7
Add lines 5 and 6
 
8
Balance at end of year (line 4 less line 7)
 
 
Form 1120 (2020)

Warning: This information is for informational purposes only and should not be used for official tax matters. Use the official Form 1120 and instructions, generally found at: https://www.irs.gov/forms-instructions. Rely on this information at your own risk. Visit https://www.irs.gov/forms-instructions for official IRS information. Consult with a tax professional.